librpc/ndr/ndr_ntlmssp.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    routines for marshalling/unmarshalling special ntlmssp structures
   5
   6    Copyright (C) Guenther Deschner 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "../librpc/gen_ndr/ndr_ntlmssp.h"
  24
  25 _PUBLIC_ size_t ndr_ntlmssp_string_length(uint32_t negotiate_flags, const char *s)
  26 {
  27         if (!s) {
  28                 return 0;
  29         }
  30
  31         if (negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE) {
  32                 return strlen(s) * 2;
  33         }
  34
  35         return strlen(s);
  36 }
  37
  38 _PUBLIC_ uint32_t ndr_ntlmssp_negotiated_string_flags(uint32_t negotiate_flags)
  39 {
  40         uint32_t flags = LIBNDR_FLAG_STR_NOTERM |
  41                          LIBNDR_FLAG_STR_CHARLEN |
  42                          LIBNDR_FLAG_REMAINING;
  43
  44         if (!(negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE)) {
  45                 flags |= LIBNDR_FLAG_STR_ASCII;
  46         }
  47
  48         return flags;
  49 }
  50
  51 _PUBLIC_ enum ndr_err_code ndr_push_AV_PAIR_LIST(struct ndr_push *ndr, int ndr_flags, const struct AV_PAIR_LIST *r)
  52 {
  53         uint32_t cntr_pair_0;
  54         if (ndr_flags & NDR_SCALARS) {
  55                 NDR_CHECK(ndr_push_align(ndr, 4));
  56                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  57                         NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
  58                 }
  59         }
  60         if (ndr_flags & NDR_BUFFERS) {
  61                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  62                         NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
  63                 }
  64         }
  65         return NDR_ERR_SUCCESS;
  66 }
  67
  68 _PUBLIC_ enum ndr_err_code ndr_pull_AV_PAIR_LIST(struct ndr_pull *ndr, int ndr_flags, struct AV_PAIR_LIST *r)
  69 {
  70         uint32_t cntr_pair_0;
  71         TALLOC_CTX *_mem_save_pair_0;
  72         if (ndr_flags & NDR_SCALARS) {
  73                 uint32_t offset = 0;
  74                 NDR_CHECK(ndr_pull_align(ndr, 4));
  75                 r->count = 0;
  76                 if (ndr->data_size > 0) {
  77                         NDR_PULL_NEED_BYTES(ndr, 4);
  78                 }
  79                 while (offset + 4 <= ndr->data_size) {
  80                         uint16_t length;
  81                         uint16_t type;
  82                         type = SVAL(ndr->data + offset, 0);
  83                         if (type == MsvAvEOL) {
  84                                 r->count++;
  85                                 break;
  86                         }
  87                         length = SVAL(ndr->data + offset, 2);
  88                         offset += length + 4;
  89                         r->count++;
  90                 }
  91                 NDR_PULL_ALLOC_N(ndr, r->pair, r->count);
  92                 _mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
  93                 NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
  94                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  95                         NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
  96                 }
  97                 NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
  98         }
  99         if (ndr_flags & NDR_BUFFERS) {
 100                 _mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
 101                 NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
 102                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
 103                         NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
 104                 }
 105                 NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
 106         }
 107         return NDR_ERR_SUCCESS;
 108 }
 109
 110 _PUBLIC_ void ndr_print_ntlmssp_nt_response(TALLOC_CTX *mem_ctx,
 111                                             const DATA_BLOB *nt_response,
 112                                             bool ntlmv2)
 113 {
 114         enum ndr_err_code ndr_err;
 115
 116         if (ntlmv2) {
 117                 struct NTLMv2_RESPONSE nt;
 118                 if (nt_response->length > 24) {
 119                         ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, &nt,
 120                                         (ndr_pull_flags_fn_t)ndr_pull_NTLMv2_RESPONSE);
 121                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 122                                 NDR_PRINT_DEBUG(NTLMv2_RESPONSE, &nt);
 123                         }
 124                 }
 125         } else {
 126                 struct NTLM_RESPONSE nt;
 127                 if (nt_response->length == 24) {
 128                         ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, &nt,
 129                                         (ndr_pull_flags_fn_t)ndr_pull_NTLM_RESPONSE);
 130                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 131                                 NDR_PRINT_DEBUG(NTLM_RESPONSE, &nt);
 132                         }
 133                 }
 134         }
 135 }
 136
 137 _PUBLIC_ void ndr_print_ntlmssp_lm_response(TALLOC_CTX *mem_ctx,
 138                                             const DATA_BLOB *lm_response,
 139                                             bool ntlmv2)
 140 {
 141         enum ndr_err_code ndr_err;
 142
 143         if (ntlmv2) {
 144                 struct LMv2_RESPONSE lm;
 145                 if (lm_response->length == 24) {
 146                         ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, &lm,
 147                                         (ndr_pull_flags_fn_t)ndr_pull_LMv2_RESPONSE);
 148                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 149                                 NDR_PRINT_DEBUG(LMv2_RESPONSE, &lm);
 150                         }
 151                 }
 152         } else {
 153                 struct LM_RESPONSE lm;
 154                 if (lm_response->length == 24) {
 155                         ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, &lm,
 156                                         (ndr_pull_flags_fn_t)ndr_pull_LM_RESPONSE);
 157                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 158                                 NDR_PRINT_DEBUG(LM_RESPONSE, &lm);
 159                         }
 160                 }
 161         }
 162 }
 163
 164 _PUBLIC_ void ndr_print_ntlmssp_Version(struct ndr_print *ndr, const char *name, const union ntlmssp_Version *r)
 165 {
 166         int level;
 167         level = ndr_print_steal_switch_value(ndr, r);
 168         switch (level) {
 169                 case NTLMSSP_NEGOTIATE_VERSION:
 170                         ndr_print_ntlmssp_VERSION(ndr, name, &r->version);
 171                 break;
 172
 173                 default:
 174                 break;
 175
 176         }
 177 }
 178
 179 _PUBLIC_ struct AV_PAIR *ndr_ntlmssp_find_av(const struct AV_PAIR_LIST *av_list,
 180                                              enum ntlmssp_AvId AvId)
 181 {
 182         struct AV_PAIR *res = NULL;
 183         uint32_t i = 0;
 184
 185         for (i = 0; i < av_list->count; i++) {
 186                 if (av_list->pair[i].AvId != AvId) {
 187                         continue;
 188                 }
 189
 190                 res = discard_const_p(struct AV_PAIR, &av_list->pair[i]);
 191                 break;
 192         }
 193
 194         return res;
 195 }